Flow guide net winding device, adjusting mechanism and working method thereof
By setting an adjustment mechanism in the flow guide net winding device, the adjustment component on the adjustment roller is pushed back, increasing the tangential angle, which solves the problem of upper and lower layer interlocking during the flow guide net winding process, ensuring the flow guiding performance and winding quality of the flow guide net.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG LVLONG NEW MATERIAL CO LTD
- Filing Date
- 2026-01-30
- Publication Date
- 2026-05-15
AI Technical Summary
During the winding process of the guide net, as the roll diameter increases, the tangential angle decreases, causing the upper and lower layers of guide net to interlock, resulting in local pore collapse and impairing the guide performance.
Design a flow guide net winding device. When the diameter of the flow guide net roll increases, the adjusting mechanism pushes the adjusting component on the adjusting roller to retract inward, increasing the tangential angle and preventing the upper and lower layers from interlocking.
This effectively avoids the interlocking of the upper and lower flow guide nets, maintains the flow guiding performance of the flow guide nets, and improves the winding quality.
Smart Images
Figure CN121609139B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of guide net winding technology, specifically relating to guide net winding device, adjustment mechanism and its working method. Background Technology
[0002] The surface of the flow guide net usually has a precise three-dimensional mesh or textured structure to achieve efficient fluid distribution and conduction. In the production and manufacturing process of the flow guide net, winding is the core process of subsequent finishing and finished product packaging. The winding quality directly determines the storage stability, appearance and the efficiency of unwinding for downstream customers. At present, the industry generally adopts center winding or surface winding methods, and through constant tension or tapered tension control, the continuously formed flow guide net is wound into a large roll of fixed width.
[0003] However, during the winding process, as the diameter of the guide net roll continues to increase, the angle between the tangent and the chord formed between the free guide net in the feed guide section and the contact point on the winding roller (chord-tangent angle) will gradually decrease. The decrease in the chord-tangent angle causes the raised texture of the upper material to irregularly embed into the recessed structure of the lower material when the guide net is stacked and wound, resulting in an interlocking phenomenon. This causes the local pores of the guide net to be crushed, damaging its core guiding performance and causing losses.
[0004] Therefore, a guide net winding device, adjustment mechanism and its working method are designed to solve the technical problem that the existing winding device causes the tangential angle to gradually decrease as the diameter of the guide net roll gradually increases during the winding process, resulting in the interlocking between the upper and lower layers of guide net and the collapse of local pores.
[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention
[0006] This disclosure provides at least one guide net winding device, an adjustment mechanism, and a method for operating the same.
[0007] In a first aspect, embodiments of this disclosure provide a flow guide net winding device, comprising:
[0008] Base;
[0009] A winding mechanism, including a winding motor adapted to drive a winding roller to rotate during startup to wind up the guide net;
[0010] A moving mechanism is disposed on the upper end surface of the base; wherein
[0011] The moving motor in the moving mechanism is adapted to drive the bracket to reciprocate in the horizontal direction when started so that the guide net in the winding covers the outer wall of the winding roller;
[0012] An adjustment mechanism is disposed on the upper end face of the base; wherein the outer wall of the adjustment roller in the adjustment mechanism abuts against the lower end face of the guide net; and
[0013] When the diameter of the guide net roll increases to the point that it abuts against the outer wall of the regulating roller, it pushes the various regulating components circumferentially arranged on the outer wall of the regulating roller to shrink circumferentially, thereby increasing the tangential angle between the free section of the guide net and the guide net roll.
[0014] In one optional implementation, the adjustment mechanism includes:
[0015] A connector is provided on the upper end face of the base;
[0016] A deflector frame, with a bearing connected to the outer wall of the connector, and a torsion spring provided at the bearing connection between the deflector frame and the connector; wherein...
[0017] The adjusting roller bearing is connected to the outer wall of the deflection frame, and the axis of the adjusting roller is parallel to the axis of the winding roller.
[0018] In one optional embodiment, the outer wall surface of the adjusting roller is provided with a plurality of sliding grooves circumferentially; wherein
[0019] Each of the aforementioned adjusting members is telescopically disposed within its corresponding slide groove; and
[0020] Each of the aforementioned grooves is equipped with a spring, and the two ends of each spring are respectively connected to the end of the adjusting member and the bottom of the groove.
[0021] In one optional embodiment, a support rod is provided on the upper end face of the base, and an arc-shaped guide plate is provided on the outer wall of the support rod; wherein
[0022] The lower end face of the arc-shaped guide plate abuts against the outer wall of each of the adjusting components;
[0023] Each of the aforementioned adjusting members is adapted to slide and retract into the interior of the groove to increase the tangential angle between the free section of the guide net and the guide net roll when the diameter of the guide net roll increases to the point that the adjusting roller deflects.
[0024] In one optional implementation, the winding mechanism includes:
[0025] The drive wheel is connected to the output end of the winding motor;
[0026] The driven wheel is sleeved on the outer wall of the take-up roller;
[0027] A transmission belt is fitted onto the outer walls of the driving pulley and the driven pulley; wherein
[0028] The winding motor is adapted to drive the drive wheel to rotate when started, and then drive the driven wheel to rotate through the transmission belt, so as to drive the winding roller to rotate and wind up the guide net.
[0029] In one alternative implementation, the moving mechanism includes:
[0030] A lead screw passes through the bracket and engages with the bracket by a thread, and one end of the lead screw is connected to the output end of the moving motor; wherein
[0031] The mobile motor is adapted to drive the lead screw to move forward and reverse during the forward and reverse start-up process, thereby driving the support and the take-up roller to move back and forth.
[0032] Secondly, embodiments of this disclosure also provide an adjusting mechanism for a guide net winding device, comprising:
[0033] The connector is located on the upper surface of the base;
[0034] A deflector frame, with a bearing connected to the outer wall of the connector, and a torsion spring provided at the bearing connection between the deflector frame and the connector; wherein...
[0035] The adjusting roller bearing is connected to the outer wall of the deflection frame, and the axis of the adjusting roller is parallel to the axis of the take-up roller.
[0036] In one optional embodiment, the outer wall surface of the adjusting roller is provided with a plurality of sliding grooves circumferentially; wherein
[0037] Each of the aforementioned adjusting members is telescopically disposed within its corresponding slide groove; and
[0038] Each of the aforementioned grooves is equipped with a spring, and the two ends of each spring are respectively connected to the end of the adjusting member and the bottom of the groove.
[0039] In one optional embodiment, a support rod is provided on the upper end face of the base, and an arc-shaped guide plate is provided on the outer wall of the support rod; wherein
[0040] The lower end face of the arc-shaped guide plate abuts against the outer wall of each of the adjusting components;
[0041] Each of the aforementioned adjusting members is adapted to slide and retract into the interior of the groove to increase the tangential angle between the free section of the guide net and the guide net roll when the diameter of the guide net roll increases to the point that the adjusting roller deflects.
[0042] Secondly, embodiments of this disclosure also provide a method for operating a flow guide net winding device, comprising:
[0043] By starting the take-up motor, the drive wheel is rotated, which in turn drives the driven wheel and the take-up roller connected to the driven wheel to rotate via the transmission belt in order to take up the guide net;
[0044] By periodically controlling the forward and reverse rotation of the moving motor, the lead screw connected to its output end is driven to move forward and reverse, thereby driving the take-up roller of the support to move back and forth so that the guide net in the winding covers the outer wall of the take-up roller.
[0045] As the diameter of the guide net roll increases until the outer wall of the guide net roll abuts against the outer wall of the adjusting roller, it pushes the adjusting roller and the deflection frame to deflect around the bearing connection between the deflection frame and the connecting piece.
[0046] During the deflection of the adjusting roller, when the adjusting components on its outer wall come into contact with the arc-shaped guide plate, they are squeezed by the arc-shaped guide plate and slide into the chute to increase the tangential angle between the free section of the guide net and the guide net roll.
[0047] The beneficial effect of this invention is that, by providing an adjustment mechanism, as the diameter of the guide net roll gradually increases until the outer wall of the guide net roll abuts against the outer wall of the adjustment roller, the adjustment components on the outer wall of the adjustment roller are pushed back into the interior of the adjustment roller, thereby increasing the tangential angle between the free section of the guide net and the guide net roll to avoid the phenomenon of interlocking between the upper and lower layers of guide nets.
[0048] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.
[0049] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0050] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0051] Figure 1 An overall perspective view provided for an embodiment of this disclosure;
[0052] Figure 2 This is a schematic diagram of the overall cross-sectional structure provided for an embodiment of this disclosure;
[0053] Figure 3 This is a schematic diagram of the first state of the adjustment structure provided in an embodiment of this disclosure;
[0054] Figure 4This is a schematic diagram of the second state of the adjustment structure provided in an embodiment of this disclosure.
[0055] In the picture:
[0056] 1. Base; 10. Bracket; 11. Guide net roll;
[0057] 2. Adjusting mechanism; 20. Connecting part; 21. Deflection frame; 22. Adjusting roller; 220. Slide groove; 23. Support rod; 24. Arc-shaped guide plate; 25. Adjusting part; 26. Spring;
[0058] 3. Moving mechanism; 30. Moving motor; 31. Lead screw;
[0059] 4. Winding mechanism; 40. Winding motor; 41. Drive pulley; 42. Winding roller; 43. Drive belt; 44. Driven pulley;
[0060] 5. Diversion net. Detailed Implementation
[0061] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0062] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0063] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.
[0064] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
[0065] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.
[0066] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0067] Research has revealed that during the winding process, as the diameter of the guide net roll continuously increases, the angle between the tangent and the chord formed by the contact point between the free guide net in the feed guide section and the winding roller (the chord-tangent angle) gradually decreases. The decrease in the chord-tangent angle causes the raised texture of the upper material to irregularly embed into the recessed structure of the lower material during the layered winding process, resulting in an interlocking phenomenon. This leads to the collapse of local pores in the guide net, damaging its core guiding performance and causing losses.
[0068] Based on the above research, this disclosure provides a guide net winding device, an adjustment mechanism and its working method. By providing an adjustment mechanism, as the diameter of the guide net roll gradually increases until the outer wall of the guide net roll abuts against the outer wall of the adjustment roller, the adjustment components on the outer wall of the adjustment roller are pushed back into the interior of the adjustment roller, thereby increasing the tangential angle between the free section of the guide net and the guide net roll to avoid the phenomenon of interlocking between the upper and lower layers of guide net.
[0069] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.
[0070] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0071] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0072] In some embodiments, such as Figure 1 and Figure 2 As shown, when the guide net 5 is started to be wound, one end of the guide net 5 is wrapped around the outer wall of the take-up roller 42. Then the take-up motor 40 is started, and its output end drives the drive wheel 41 to rotate. The drive wheel 44 is driven to rotate through the transmission belt 43. In turn, the take-up roller 42 inserted in the center of the drive wheel 44 is driven to rotate through the drive wheel 44, thereby realizing the winding of the guide net 5 in the direction shown in F1.
[0073] In some embodiments, such as Figure 2 As shown, during the winding process of the guide net 5, the moving motor 30 is started simultaneously, and its output end drives the lead screw 31 to rotate. The lead screw 31 passes through the bracket 10 and is threaded into the bracket 10. Therefore, as the lead screw 31 rotates, the bracket 10 will move along the axis of the lead screw 31. By continuously starting the moving motor 30 in the forward and reverse directions, the lead screw 31 is driven to rotate forward and reverse continuously, thereby controlling the bracket 10 and the winding roller 42 connected to the bearing on the bracket 10 to move back and forth in the F2 direction, so that the guide net 5 in the winding can cover the outer wall of the winding roller 42.
[0074] In some embodiments, such as Figure 3 and Figure 4As shown, during the initial winding process, the diameter of the guide net roll 11 is relatively small and has not yet come into contact with the outer wall of the adjusting roller 22. At this time, the adjusting member 25 on the outer wall of the adjusting roller 22, which is in contact with the lower end face of the arc-shaped guide plate 24, is restricted by the arc-shaped guide plate 24 and slides out a certain distance in the groove 220. As the diameter of the guide net roll 11 increases, the tangential angle α between the free section of the guide net 5 and the outer wall of the guide net roll 11 between the adjusting roller 22 and the guide net roll 11 decreases. When the diameter of the guide net roll 11 increases to the point of contacting the outer wall of the adjusting roller 22, if the diameter of the adjusting roller 22 does not change, the adjusting roller 22 only serves to tension the guide net 5. At this time, as the guide net 5 is wound up, an interlocking phenomenon will occur between the inner and outer layers of the guide net 5 of the guide net roll 11. Therefore, by setting an arc-shaped guide plate 24 on one side of the adjusting roller 22, the lower end face of the arc-shaped guide plate 24 covers one end of each adjusting member 25. As the diameter of the guide net roll 11 increases, after it comes into contact with the adjusting roller 22, it pushes the adjusting roller 22 and the deflection frame 21 to deflect around the bearing connection between the deflection frame 21 and the connecting piece 20. The torsion spring set at the bearing connection between the two ensures that the adjusting roller 22 always comes into contact with the outer wall of the guide net roll 11. During the movement of the adjusting roller 22, the upper end face of each adjusting piece 25 on its outer wall slides along the lower end face of the arc guide plate 24 and slides into the corresponding groove 220. At this time, as each adjusting piece 25 that comes into contact with the arc guide plate 24 contracts toward the axis of the adjusting roller 22, it drives the guide net 5 that comes into contact with each adjusting piece 25 to move. From a macroscopic point of view, the diameter of the adjusting roller 22 is continuously decreasing during the deflection process. By reducing the diameter of the adjusting roller 22, the tangential angle α between the free section of the guide net 5 and the guide net roll 11 is increased, thereby avoiding the phenomenon of interlocking between the inner and outer layers of the guide net 5 of the guide net roll 11.
[0075] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.
[0076] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.
[0077] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.
[0078] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.
[0079] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A flow guide net winding device, characterized in that, include: Base (1); The winding mechanism (4) includes a winding motor (40) adapted to drive the winding roller (42) to rotate during startup to wind up the guide net (5); The moving mechanism (3) is disposed on the upper end surface of the base (1); in The moving motor (30) in the moving mechanism (3) is adapted to drive the bracket (10) to reciprocate in the horizontal direction when started so that the guide net (5) in the winding covers the outer wall of the winding roller (42); An adjusting mechanism (2) is disposed on the upper end face of the base (1); wherein the outer wall of the adjusting roller (22) in the adjusting mechanism (2) abuts against the lower end face of the guide net (5); and When the diameter of the guide net roll (11) increases to the point that it abuts against the outer wall of the adjusting roller (22), the adjusting parts (25) arranged circumferentially on the outer wall of the adjusting roller (22) are pushed to shrink circumferentially to increase the tangential angle between the free section of the guide net (5) and the guide net roll (11).
2. The guide net winding device as described in claim 1, characterized in that, The adjustment mechanism (2) includes: A connector (20) is disposed on the upper end face of the base (1); A deflector frame (21) is connected to the outer wall of the connector (20) by a bearing, and a torsion spring is provided at the bearing connection between the deflector frame (21) and the connector (20); wherein The adjusting roller (22) is bearing connected to the outer wall of the deflector (21), and the axis of the adjusting roller (22) is parallel to the axis of the winding roller (42).
3. The guide net winding device as described in claim 1, characterized in that, The outer wall surface of the adjusting roller (22) is provided with a plurality of grooves (220) in a circumferential manner; wherein Each of the aforementioned adjusting members (25) is telescopically disposed within the corresponding slide groove (220); and Each of the slide grooves (220) is provided with a spring (26), and the two ends of each spring (26) are respectively connected to the end of the adjusting member (25) and the bottom of the slide groove (220).
4. The guide net winding device as described in claim 3, characterized in that, A support rod (23) is provided on the upper end face of the base (1), and an arc-shaped guide plate (24) is provided on the outer wall of the support rod (23); wherein The lower end face of the arc-shaped guide plate (24) abuts against the outer wall of each of the adjusting members (25); Each of the adjustment members (25) is adapted to slide and retract into the interior of the groove (220) to increase the tangential angle between the free section of the guide net (5) and the guide net roll (11) when the diameter of the guide net roll (11) increases to the point that the guide adjustment roller (22) deflects.
5. The guide net winding device as described in claim 4, characterized in that, The winding mechanism (4) includes: The drive wheel (41) is connected to the output end of the winding motor (40); The driven wheel (44) is sleeved on the outer wall of the take-up roller (42); A transmission belt (43) is fitted onto the outer walls of the driving pulley (41) and the driven pulley (44); wherein The winding motor (40) is adapted to drive the drive wheel (41) to rotate when started, and then drive the driven wheel (44) to rotate through the transmission belt (43), so as to drive the winding roller (42) to rotate to wind up the guide net (5).
6. The guide net winding device as described in claim 5, characterized in that, The moving mechanism (3) includes: A lead screw (31) passes through the bracket (10) and is threadedly engaged with the bracket (10), and one end of the lead screw (31) is connected to the output end of the moving motor (30); wherein The mobile motor (30) is adapted to drive the lead screw (31) to move forward and backward during the forward and reverse start-up process, thereby driving the bracket (10) and the take-up roller (42) to move back and forth.
7. An adjusting mechanism for a guide net winding device, characterized in that, include: A connector (20) is provided on the upper end face of the base (1); The deflection frame (21) is connected to the outer wall of the connector (20) by a bearing, and a torsion spring is provided at the bearing connection between the deflection frame (21) and the connector (20); in The adjusting roller (22) is bearing connected to the outer wall of the deflector (21), and the axis of the adjusting roller (22) is parallel to the axis of the take-up roller (42); The outer wall of the adjusting roller (22) is provided with several grooves (220) circumferentially; wherein Each adjusting element (25) is slidably disposed within the corresponding slide groove (220); and Each of the slide grooves (220) is provided with a spring (26), and the two ends of each spring (26) are respectively connected to the adjusting member (25) and the inner wall of the slide groove (220); A support rod (23) is provided on the upper end face of the base (1), and an arc-shaped guide plate (24) is provided on the outer wall of the support rod (23). in The lower end face of the arc-shaped guide plate (24) abuts against the outer wall of each of the adjusting members (25); Each of the adjustment members (25) is adapted to slide and retract into the interior of the groove (220) to increase the tangential angle between the free section of the guide net (5) and the guide net roll (11) when the diameter of the guide net roll (11) increases to the point that the guide adjustment roller (22) moves.
8. A method for operating a flow guide net winding device, characterized in that, include: By starting the winding motor (40), the drive wheel (41) is driven to rotate, and then the driven wheel (44) and the winding roller (42) connected to the driven wheel (44) are driven to rotate via the transmission belt (43) to wind up the guide net; By periodically controlling the forward and reverse rotation of the moving motor (30), the lead screw (31) connected to its output end is driven to rotate forward and reverse, thereby driving the take-up roller (42) of the bracket (10) to move back and forth so that the guide net (5) in the winding covers the outer wall of the take-up roller (42); As the diameter of the guide net roll (11) increases until the outer wall of the guide net roll (11) abuts against the outer wall of the adjusting roller (22), the adjusting roller (22) and the deflection frame (21) are pushed to deflect around the bearing connection between the deflection frame (21) and the connector (20); During the deflection of the adjusting roller (22), when each adjusting component (25) on its outer wall comes into contact with the arc-shaped guide plate (24), it is squeezed by the arc-shaped guide plate (24) and slides into the groove (220) to increase the tangential angle between the free section of the guide net (5) and the guide net roll (11).